what is the indicator for a male being a virgin is it the first time he ejaculates or the first time he penetrates a female

It is at penetration. Without going into detail, males are also capable of ejaculating without being sexually active.

Now, what actually causes the loss? If the guy enters either... back entrance, or is himself penetrated, then it's a clear loss of virginity. However, there are differing opinions on other actions, be it oral, reciprocated fellatio, etc, as to whether those are losses or not. Those would be up to you to determine.

Oh, subject at hand, sorry. It was with a friend, we were both horny, and well... I asked if he wanted to enter me, and he did, so... (Of course, that's what watching porn together can do...)

If I ever do it (which I seriously doubt ), I wish it to be with my best friend.
It can either be unplanned (us fooling around and end up having sex), or planned (if she becomes my girlfriend, which I doubt).
Probably after I give her a relaxing (a.k.a. erotic ) massage or something. XD

I will build a time machine, go back in time to virgin me, and then teach him about how to exploit the time machine. Then have him kill relative me, and then go about the course of losing his virginity exactly like how I did, then continuously go back in time and do the exact same thing, until a million me's have died in the process.

It really would re define the definition of being a virgin killer. I'm a virgin and i've killed 1,000 duplicates, and this is a PC. Although would virgin me be considered a mass murderer, because technically it's an alternate me every time...

Hmm, I gave my virginity to a boy after I nearly killed him in a car accident - at least I would like to think I was trying to make up for that, but it might have been partially the "OMG I almost died and I would have died a virgin!" afterthought going on too.
Honestly though, I was pretty freaked out after havng rolled my car 7 times. Maybe I was just high on adrenaline. I will say, it didn't hurt like I thought it would... But I don't remember much about it.

People could give it rather than lose it. Whatever you may do, there might be this lingering feeling of doom that whoever takes your virginity from you will not have been worth it, and that is pretty depressing. Some people just wait for marriage, but they might fear that marriage will never happen for them, or it would only fall apart soon after it took place.

Popular culture made virginity into a crime. This is a sad world we live in.